Hydraulically controlled wheel scraper



1935. M LENNEN c. SLATE I HYDRAULICALLY CONTROLLED WHEEL SCRAPER 3Sheet-Sheet 1 Filed Feb. 1, 1930 1935- MOLENNENC. SLATE 1,989,560

fiYDR-AULICALLY CONTROLLED WHEEL SCRAPER Filed Feb. i, 1936 sSheets-Sheet 2 Jan. 29, 1935.

M LENNEN C. SLATE HYDRAULICALLY CONTROLLED WHEEL SCRAPER Filed Feb. 1,1930 3 Sheets-Sheet 3 Patented Jan. 29, 1935 :7 T I UNITED PATENT OFFICE"1i h I ;1',9s9,5sc"' I HYDRAULICALLY CONTROLLED WHEEL ,SGRAPER,McLennen C. "Slate, 'Albany, reg., assignor tolv j Slate ConstructionCompany, Albany, Oreg. Application February }1, 1990, 'serishto. 425,247

' ,10Claims; (0137-140) An important object of my invention is theacross the front bottom portion of the scraperprovision of a scraperhaving eflicient carrying body 28. Suitable draft'connecting rods 21are" capacity, which-can be moved backward as well pivotally connectedat 22-to the bottom of the' as forward, which can beraised to passobstrucscraper body at opposite sides thereof, and have .tions withoutlosing the load, and over which the their forward ends connected at 23to a lug 18' 5 operator will have positive control at all times. whichis slidably arranged on the underside of A further object of myinvention is to provide a f the"-tongue' 30 in the manner shown inmyco-- scraper of this character, the digging angle of pendingapplication 379,751, filed July 20, 1929 which may be controlled at willby the operator. now Patent No. 1,791,485 of February I 3, 1931.

Other objects and advantages of my invention A suitable clevis 17-ispivotally'mounted on the 10 will be apparent during the course of thefollowing forward end of; thetongue and is shown condescription. nectedto a tractor hitch device T. A lever 24 i 's In the accompanyingdrawingswhich form a pivotally secured to the tonguefc'ir'-releasing the part ofthis specification and wherein like charlug 18 from its normal lookedforward position,

1iacters of reference denote like parts throughout in the manner shownin my co-pending applica- 15" the same, tion referred to above. 1 I rFigure 1 is a side elevation of my improved 'Whenthe slide lug 18 isreleased the weight of scraper incarrying position, the scraperwillcause it to vtilt'up'or'ithe runners I Figure'2 is a rear elevationthereof, or shoes 29in a substantially upright 'dum'ping Figure 3 is asideelevationof the inventionin position. 1 20 digging position, I Inoperation, when fluid under pressure is ad- Figure 4 is a side elevationof my improved mitted through-conduit 1'1'into the hydraulic scrapershowing the scraper body elevated to its cylinder 9 and the fluidalreadythe cylinderis highest position, and, Y allowed toescape'through theoutlet, the piston Figure 5 is a perspective View of my invention 12will moveforward inthe cylinder and the pin' 25' showing a modifiedwheelmounting and'rear end 13 will'move forward in theslot 14 and tiltthei construction. 1 scraper body-to cause cutting blade 15 to'enga'ge'"In the drawings the numeral 28 designates a the ground-at 16. 'I hisactionwill take pl'ace'bescraper body having spaced brackets 3, 4, 5 and6 cause clevis17 the forward end ofthe tongue,

30 attached to the rear thereof by suitable fastening being attached tothe tractor or other draft means, 30

means such as bolts 8. An axle 2 is mounted in is'heldina fixed positionabovethesurface of the the brackets and carries a pair of wheels 1 and 1ground. When the scraper is moved forward:- of sufficient size tosupport the scraper body 28 while in this position'the earth will bescraped and t in a normally spaced rel ationwith the'ground. loaded intothe scraper body; T f

A pair'of spaced posts 3l-are secured t'o'the rear It willbe seen thatwhen the piston-12 is moved 35 of the scraper body and extend'asubstantial dis towards-the rear of the cylinder, the scraper is tancethereabove. Dumping runners 29 are verfree to'travelbackwardson-wheels'l and 1 withtically arranged at the front ofthe scraper body' o t dragging on th v and serve to support thecuttingblade in spaced Ifit is desired to govern'the depthof the cut,

40 relation to the ground i du p POSitiOII- fluidimay be forced underpressure into thecylin 40' 1 A tongue 30 has an extension 1001) 3 toprovide der to"m'o've the piston and consequently change a slot 14through which extends a pin 13 mounted the digging angle of thescraperby changing the in he posts VIA tongue extension Ior bracketposition of the 1111113 in the slot"14=.. When the 27 is arranged on theupper sideof the tongue and scraper is suificiently loaded withearth,-the pisis pivotally conn at 26 a lfau ic cy nton is forcedtowards the rear of the cylinderto 45 der 9- A piston 12 is arranged nthe. Cylinder 9 raise the front end from the ground to the carrya d is pra iv y Connected by a piston rod 20 ing position shown in Fig.1, inwhich position the with-a pin 19 mounted in the upper ends of the h lsupport t t e w t, 1 I posts 31. Conduit 10 communicates with the forhwheels 1 5 1" and t a t as m y 1 4 ward end of the hydraulic cylinder 9and conduit 7 e heavy and sfifongly a and upport rge 50 11 GOmmlmicatesWithth real end 0f the Cylinder, portion of the weight of the scraper asit moves whe eby fluid under Pressure may be upp i d along thesground.The scraper is lowered to a the hydraulic cylinder on either side of thepisdi in 'position while in motion and except-un ton 12. der unusualconditions the wheels are always in;

Asuitable cutting blade 15 extends transversely engagement with theground. a 5

75" rigidly secured to the rearportion thereof, a

ployed for controlling the flow of fluid. under.

pressure to conduits 10 and 11 toand from the hydraulic cylinder 9.

It is within the spirit of my invention to utilize hydraulic controlmechanism of the same type" as that illustrated in detail-.inamy'coiep'ending.

application, Serial No. 398,685 filed October 10;

1929, the mechanism otherwise. being asillustrated in the presentinvention; 1' 3 Referring to Figure 5 of the drawings, there isillustrated a modified rear endcor'ist'ruction in which a single centralbracket 33 is utilized-to:- perform the function of both the brackets4and" 5,:andiupward extensions 34 cf the central bracket take the-placeof the .posts' 31-. The operation of the .modified form; of theinvention shown in Figure ;'5is the, same as in the form of theinvention shownrin Eiguresl tov 4, the modified con.- struction,however, permitting the use of 'widerwheels; :than is possible with theuse of the brackets4and5.-.

The termposts isused to designate the bracket extensions:.-34- as wellas the posts :31.

Havingwthusdescribed my invention, what I claim and desire :to protectbyLetters Patent-is:

1; In an apparatus of the character, described, the-combination with ascraper body, of a draft -device connected'withthe scraper body adjacentthe rear thereof, means connecting the draft device with, the forwardportion of the; scraper body, and hydraulic apparatus operativelyconnecting the draft device with, the scraper bodyand arranged to causerelative movement-be tween thedraftdevice and the scraper body duringthe digging, hauling andrdumping. opera- H tions of the scraper body.

. 2..In' an. apparatus of; the character described;

the'combination with a-scraperbody,:of;a draft,

device operatively connected to saidscraper body; 1 saidconnectiompermittinglimited. sliding movement of the.--scraperrbodyrelative to the" draft: device, and a, hydraulic apparatusassociatedzwithsaid sliding connection to cause relative: movement.between the scrapenbody. 1 H

3; lnzamapparatus of thecharacter described, the combination witha'scraper. body, ofbrackets rigidly secured at the rearthereof, a wheel ofsubstantial size journaled in said brackets and draft: device andadapted to engage the ground,a postarranged adjacent the rear of, thescraper: body, draft meanshaving a sliding connection withthe post,

and 'meansto. adjust said sliding connection tomove thescraper body inan are having the wheel journals as acenter. g

4. In-an apparatus of the character described, the combination with awheeled scraper, of a draft: device having a sliding connection with 5.In an apparatus of the character described,

the combination with a scraper body, of bracketswheel of substantialsize jour'naled in said brackets and extending below the rear portion ofthe scraper, a post extending above the scraper adjacent the rearthereof, a draft device having a sliding connection with said post at apoint spaced from its upper end, and a hydraulic apparatus connectingsaid draft device with the post atapoint spaced above the. slidingconnectioniand adapted? to cause relative movement between the draft"device and scraper body.

6. .In an apparatus of the character described, thecombination with ascraper body, of a post connectedito'asaid"scraper body adjacent therear thereof and extending a substantial distance thereabove, a draft,device having a sliding con- "nectionwithsaidipost', a bracket on saiddraft device, a hydraulic cylinder secured to said -brackti a" pistonarranged in said cylinder and pivotallyconnected to the post, and meansfor supplying fluid under pressure to said hydraulic cylinden. ,f

7. In an :apparatus :of the character described,-

the combination with .a scraper body, of. a 'post extending thereaboveadjacent the man thereof, a draftdevice-slidably connected with-saidpost at apoint spacedtfrom its top, a hydraulic. apparatus connectingthe draft device with the post at. apoint spaced above the slidableconnectionfor .causingmelative movementbetween the draft. device: andthe scraper body,.and3 areleasable connection between the front-of thescraper body and the draft device.

8. In .an apparatusof the character described,

the combination withascraper. body, of brackets scraper body and draftdevice,-,andazreleasable connection between'the frontportion of thescraper; body: and the draft: device.

9. The combination of a scraper body. having,

a cutting blade; brackets affixed to the rearof the scraper.body,iwheels carried. by the brackets and of :suflicientsize tonormally hold the bottom of the scraper body-spaced from the ground, .upstanding. members aflixed-to the rear of, the

scraper; body, a-hydraulic cylinder, apiston slidably mounted in: thehydraulic cylinder, said pis-- ton havingra piston rod operativelyconnected with theupper endsof the upstanding members affixed. to thescraper, a tongue for. the scraper, said tongue being' adapted-tobeattached-to a' draftmeans; a-ppin'mounted in the upstanding elements:andspaced from the upper end thereof, the aforesaid'tongue: having arear extension portion-provided with a slot to slidablyreceive theaforesaid pin, whereby on operation: of the piston thescraper-bodymay-be tilted to a desired digging angle a'ndi returned to its originalposition by hydraulic pressure control.

10; Thecombination ofa scraperbody havinga cutting. blade, outerbrackets substantially alinedwith the side. of the scraper bodyat therear thereof, a singlecentralbracket, relatively wide wheels carried bythe aforesaidbrackets and. normally holding; the bottom ofthe scraperbody spaced from'the ground," upstandingmembersfixedly mounted on therear. of the scraper body, hydraulic cylinder and piston mechanismoperatively connected with the upper end of the upstanding elements, atongue for the scraper, said tongue being adapted to be attached to adraft means, a pin mounted in the upstanding elements and spaced fromthe upper end thereof, the aforesaid tongue having a rear extensionportion including a slot to slidably receive the aforesaid pin, wherebyon operation of the hydraulic control mechanism the scraper body may betilted to a desired digging angle or returne to its original position atwill.

MOLENNEN c. SLATE.

